求问NN一道SC PREP（也是700-800）里的题目，想了很久

Cinnabar

prep上一道题，求解答鸭！
Because she knew many of the leaders of colonial America and the American Revolution personally, Mercy Otis Warren was continually at or near the center of political events from 1765 to 1789, a vantage point combining with her talent for writing to make her one of the most valuable historians of the era  A. a vantage point combining with her talent for writing to make
B. a vantage point, when combined with her talent for writing, that made
C. a vantage point that combined with her talent for writing, and it made
D. and this vantage point, which combined with her talent for writing to make
E. and this vantage point, combined with her talent for writing, made


答案是E，然而我在A，E纠结许久后还是错选了A

我做题的时候的想法是，‘a vantage point .....’ 这一串做同位语修饰前面‘at or near the center of political events’，然后是作为对前面这个信息的补充说明的。但是E就把vantage point作为主句的成分提到主句里面去了，我就感觉是不是这样的转换会不会‘主次倒置’

还有如果非要指出A问题的话我当时一直觉得后面那个'TO MAKE'挺怪的，似乎并不是这个vantage point的目的是make her the most.....（也可能是我想多了哈哈哈）

总之真诚求解析~看了好几个版本的解析总觉得不太全，或许E是在什么方面比A好么？